Adafruit PCF8523 Real Time Clock
|
|
- Spencer Parsons
- 6 years ago
- Views:
Transcription
1 Adafruit PCF8523 Real Time Clock Created by lady ada Last updated on :07:09 AM UTC
2 Guide Contents Guide Contents Overview Pinouts Power Pins: I2C Logic pins: Other Pins: Assembly Prepare the header strip: Add the breakout board: And Solder! Usage What is a Real Time Clock? Battery Backup CR mm Diameter - 3V Lithium Coin Cell Battery RTC with Arduino Wiring Talking to the RTC First RTC test Setting the time Reading the time Downloads Datasheets and Files Schematic Fabrication Print RTC with CircuitPython Wiring Adafruit CircuitPython Library Install Usage Setting the time Adafruit Industries Page 2 of 22
3 Overview This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for datalogging, clock-building, time stamping, timers and alarms, etc. Equipped with PCF8523 RTC - it can run from 3.3V or 5V power & logic! Adafruit Industries Page 3 of 22
4 Works great with an Arduino using our RTC library or with a Raspberry Pi (or similar single board linux computer) PCB & header are included Plugs into any breadboard, or you can use wires Two mounting holes Will keep time for 5 years or more The PCF8523 is simple and inexpensive but not a high precision device. It may lose or gain up to 2 seconds a day. For a high-precision, temperature compensated alternative, please check out the DS3231 precision RTC. If you need a DS1307 for compatibility reasons, check out our DS1307 RTC breakout Adafruit Industries Page 4 of 22
5 Pinouts The PCF8523 is a I2C device. That means it uses the two I2C data/clock wires available on most microcontrollers, and can share those pins with other sensors as long as they don't have an address collision. For future reference, the default I2C address is 0x68. You cannot change it. Power Pins: VCC - this is the power pin. This chip can be powered by 3-5VDC so there is now on-board regulator. To power the board, give it the same power as the logic level of your microcontroller - e.g. for a 5V micro like Arduino, use 5V GND - common ground for power and logic I2C Logic pins: Adafruit Industries Page 5 of 22
6 SCL - I2C clock pin, connect to your microcontrollers I2C clock line. SDA - I2C data pin, connect to your microcontrollers I2C data line. Other Pins: The SQW pin is for square-wave output if you enable it Adafruit Industries Page 6 of 22
7 Assembly Assembly is really easy, you can use straight or 'right-angle' style headers to attach to the PCB. We'll be using the plain straight headers included The board comes with all surface-mount components pre-soldered. The included header strip can be soldered on for convenient use on a breadboard or with 0.1" connectors. You can also skip this step and solder on wires. Prepare the header strip: Cut the strip to length if necessary. It will be easier to solder if you insert it into a breadboard - long pins down Adafruit Industries Page 7 of 22
8 Add the breakout board: Place the breakout board over the pins so that the short pins poke through the breakout pads And Solder! Be sure to solder all 5 pins for reliable electrical contact. (For tips on soldering, be sure to check out our Guide to Excellent Soldering ( Adafruit Industries Page 8 of 22
9 You're done! Check your solder joints visually and continue onto the next steps. Adafruit Industries Page 9 of 22
10 Usage What is a Real Time Clock? When logging data, it's often really really useful to have timestamps! That way you can take data one minute apart (by checking the clock) or noting at what time of day the data was logged. The Arduino IDE does have a built-in timekeeper called millis() (CircuitPython has time) and theres' also timers built into the chip that can keep track of longer time periods like minutes or days. So why would you want to have a separate RTC chip? Well, the biggest reason is that millis()/time only keeps track of time since the board was last powered - that means that when the power is turned on, the millisecond timer is set back to 0. The board doesn't know its 'Tuesday' or 'March 8th' all it can tell is 'Its been 14,000 milliseconds since I was last turned on'. OK so what if you wanted to set the time? You'd have to program in the date and time and you could have it count from that point on. But if it lost power, you'd have to reset the time. Much like very cheap alarm clocks: every time they lose power they blink 12:00 While this sort of basic timekeeping is OK for some projects, a data-logger will need to have consistent timekeeping that doesnt reset when the power goes out or is reprogrammed. Thus, we include a separate RTC! The RTC chip is a specialized chip that just keeps track of time. It can count leap-years and knows how many days are in a month, but it doesn't take care of Daylight Savings Time (because it changes from place to place) This image shows a computer motherboard with a Real Time Clock called the DS1387. Theres a lithium battery in there which is why it's so big. The RTC we'll be using is the PCF8523 Battery Backup As long as it has a coin cell to run it, the RTC will merrily tick along for a long time, even when the Feather loses power, or is reprogrammed. Use any CR1220 3V lithium metal coin cell battery: Adafruit Industries Page 10 of 22
11 CR mm Diameter - 3V Lithium Coin Cell Battery PRODUCT ID: $0.95 IN STOCK You MUST have a coin cell installed for the RTC to work, if there is no coin cell, it will act strangely and possibly hang the Arduino when you try to use it, so ALWAYS make SURE there's a battery installed, even if it's a dead battery. Adafruit Industries Page 11 of 22
12 RTC with Arduino Wiring Wiring it up is easy, connect GND to GND on your board VCC to the logic level power of your board (on classic Arduinos & Metros use 5V, on 3.3V devices use 3.3V) SDA to the SDA i2c data pin SCL to the SCL i2c clock pin There are internal 10K pull-ups on the PCF8523 on SDA and SCL to the VCC voltage Talking to the RTC pcfmetro Fritzing The RTC is an i2c device, which means it uses 2 wires to to communicate. These two wires are used to set the time and retrieve it. For the RTC library, we'll be using a fork of JeeLab's excellent RTC library, which is available on GitHub. You can do that by visiting the github repo and manually downloading or, easier go to the Arduino Library Manager Adafruit Industries Page 12 of 22
13 Type in RTClib - and find the one that is by Adafruit and click Install There are a few different 'forks' of RTClib, make sure you are using the ADAFRUIT one! We also have a great tutorial on Arduino library installation at: Once done, restart the IDE First RTC test The first thing we'll demonstrate is a test sketch that will read the time from the RTC once a second. We'll also show what happens if you remove the battery and replace it since that causes the RTC to halt. So to start, remove the battery from the holder while the Feather is not powered or plugged into USB. Wait 3 seconds and then replace the battery. This resets the RTC chip. Now load up the matching sketch for your RTC Open up Examples->RTClib->pcf8523 Upload it to your board with the PCF8523 breakout board or FeatherWing connected Adafruit Industries Page 13 of 22
14 Now open up the Serial Console and make sure the baud rate is set correctly at baud you should see the following: Whenever the RTC chip loses all power (including the backup battery) it will reset to an earlier date and report the time as 0:0:0 or similar. Whenever you set the time, this will kickstart the clock ticking. So, basically, the upshot here is that you should never ever remove the battery once you've set the time. You shouldn't have to and the battery holder is very snug so unless the board is crushed, the battery won't 'fall out' Setting the time With the same sketch loaded, uncomment the line that starts with RTC.adjust like so: Adafruit Industries Page 14 of 22
15 if (! rtc.initialized()) { Serial.println("RTC is NOT running!"); // following line sets the RTC to the date & time this sketch was compiled rtc.adjust(datetime(f( DATE ), F( TIME ))); This line is very cute, what it does is take the Date and Time according the computer you're using (right when you compile the code) and uses that to program the RTC. If your computer time is not set right you should fix that first. Then you must press the Upload button to compile and then immediately upload. If you compile and then upload later, the clock will be off by that amount of time. Then open up the Serial monitor window to show that the time has been set From now on, you won't have to ever set the time again: the battery will last 5 or more years Reading the time Now that the RTC is merrily ticking away, we'll want to query it for the time. Let's look at the sketch again to see how this is done Adafruit Industries Page 15 of 22
16 void loop () { DateTime now = rtc.now(); Serial.print(now.year(), DEC); Serial.print('/'); Serial.print(now.month(), DEC); Serial.print('/'); Serial.print(now.day(), DEC); Serial.print(" ("); Serial.print(daysOfTheWeek[now.dayOfTheWeek()]); Serial.print(") "); Serial.print(now.hour(), DEC); Serial.print(':'); Serial.print(now.minute(), DEC); Serial.print(':'); Serial.print(now.second(), DEC); Serial.println(); There's pretty much only one way to get the time using the RTClib, which is to call now(), a function that returns a DateTime object that describes the year, month, day, hour, minute and second when you called now(). There are some RTC libraries that instead have you call something like RTC.year() and RTC.hour() to get the current year and hour. However, there's one problem where if you happen to ask for the minute right at 3:14:59 just before the next minute rolls over, and then the second right after the minute rolls over (so at 3:15:00) you'll see the time as 3:14:00 which is a minute off. If you did it the other way around you could get 3:15:59 - so one minute off in the other direction. Because this is not an especially unlikely occurance - particularly if you're querying the time pretty often - we take a 'snapshot' of the time from the RTC all at once and then we can pull it apart into day() or second() as seen above. It's a tiny bit more effort but we think its worth it to avoid mistakes! We can also get a 'timestamp' out of the DateTime object by calling unixtime which counts the number of seconds (not counting leapseconds) since midnight, January 1st 1970 Serial.print(" since 2000 = "); Serial.print(now.unixtime()); Serial.print("s = "); Serial.print(now.unixtime() / 86400L); Serial.println("d"); Since there are 60*60*24 = seconds in a day, we can easily count days since then as well. This might be useful when you want to keep track of how much time has passed since the last query, making some math a lot easier (like checking if it's been 5 minutes later, just see if unixtime() has increased by 300, you dont have to worry about hour changes) Adafruit Industries Page 16 of 22
17 Downloads Datasheets and Files EagleCAD PCB files on GitHub Fritzing object in Adafruit Fritzing library PCF8523 product page Schematic Fabrication Print Adafruit Industries Page 17 of 22
18 Adafruit Industries Page 18 of 22
19 RTC with CircuitPython Wiring Wiring it up is easy, connect GND to GND on your board VCC to the logic level power of your board - every CircuitPython board uses 3.3V SDA to the SDA i2c data pin SCL to the SCL i2c clock pin There are internal 10K pull-ups on the PCF8523 on SDA and SCL to the VCC voltage Adafruit CircuitPython Library Install To use the RTC sensor with your Adafruit CircuitPython board you'll need to install the Adafruit_CircuitPython_PCF8523 module on your board. First make sure you are running the latest version of Adafruit CircuitPython for your board. Next you'll need to install the necessary libraries to use the hardware--carefully follow the steps to find and install these libraries from Adafruit's CircuitPython library bundle. Our introduction guide has a great page on how to install the library bundle for both express and non-express boards. Remember for non-express boards like the, you'll need to manually install the necessary libraries from the bundle: adafruit_bus_device folder adafruit_register folder adafruit_pcf8523.mpy Before continuing make sure your board's lib folder or root filesystem has the adafruit_pcf8523.mpy module, the adafruit_register folder, and the adafruit_bus_device folder copied over. Adafruit Industries Page 19 of 22
20 Usage To demonstrate the usage of the PCF8523 module you can connect to your board's serial REPL to see the output while saving our example sketch to main.py Next connect to the board's serial REPL so you are at the CircuitPython >>> prompt. Then save this script to main.py (back up or remove whatever was there before) import busio import adafruit_pcf8523 import time import board myi2c = busio.i2c(board.scl, board.sda) rtc = adafruit_pcf8523.pcf8523(myi2c) days = ("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday") if False: # change to True if you want to write the time! # year, mon, date, hour, min, sec, wday, yday, isdst t = time.struct_time((2017, 10, 29, 15, 14, 15, 0, -1, -1)) # you must set year, mon, date, hour, min, sec and weekday # yearday is not supported, isdst can be set but we don't do anything with it at this time print("setting time to:", t) rtc.datetime = t print() # uncomment for debugging while True: t = rtc.datetime #print(t) # uncomment for debugging print("the date is %s %d/%d/%d" % (days[t.tm_wday], t.tm_mday, t.tm_mon, t.tm_year)) print("the time is %d:%02d:%02d" % (t.tm_hour, t.tm_min, t.tm_sec)) time.sleep(1) # wait a second Setting the time The first time you run the program, you'll need to set the time Adafruit Industries Page 20 of 22
21 find these lines: if False: # change to True if you want to write the time! # year, mon, date, hour, min, sec, wday, yday, isdst t = time.struct_time((2017, 10, 29, 15, 14, 15, 0, -1, -1)) # you must set year, mon, date, hour, min, sec and weekday # yearday is not supported, isdst can be set but we don't do anything with it at this time Change the False to True in the first line, and update the time.struct_time to have the current time starting from year to weekday. The last two entries can stay at -1 Re-run the sketch by saving and you'll see this out of the REPL: Note the part where the program says it is Setting time to: Now you can go back and change the if True to if False and save, so you don't re-set the RTC again. The script will now output the time and date Adafruit Industries Page 21 of 22
Adafruit DS3231 Precision RTC Breakout
Adafruit DS3231 Precision RTC Breakout Created by lady ada Last updated on 2017-11-26 10:28:38 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: I2C Logic pins: Other Pins: Assembly Prepare
More informationAdafruit MCP9808 Precision I2C Temperature Sensor Guide
Adafruit MCP9808 Precision I2C Temperature Sensor Guide Created by lady ada Last updated on 2017-11-12 06:09:49 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins I2C Data Pins Optional Pins
More informationAdafruit VL53L0X Time of Flight Micro-LIDAR Distance Sensor Breakout
Adafruit VL53L0X Time of Flight Micro-LIDAR Distance Sensor Breakout Created by lady ada Last updated on 2017-12-28 11:56:14 PM UTC Guide Contents Guide Contents Overview Sensing Capablities Pinouts Power
More informationAdafruit s PCF8523 RTC Library Documentation
Adafruit s PCF8523 RTC Library Documentation Release 1.0 Philip Moyer Feb 02, 2018 Contents 1 Dependencies 3 2 Usage Notes 5 2.1 Basics................................................... 5 2.2 Date and
More informationAdafruit APDS9960 breakout
Adafruit APDS9960 breakout Created by Dean Miller Last updated on 2018-01-19 11:18:59 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: Logic pins: Assembly Prepare the header strip: Add
More informationAdafruit Si7021 Temperature + Humidity Sensor
Adafruit Si7021 Temperature + Humidity Sensor Created by lady ada Last updated on 2017-11-12 06:14:07 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: I2C Logic pins: Assembly Prepare
More informationAdafruit DRV2605 Haptic Controller Breakout
Adafruit DRV2605 Haptic Controller Breakout Created by lady ada Last updated on 2018-08-20 03:28:51 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins I2C Pins Other! Assembly Prepare the
More informationAdafruit s DS3231 RTC Library Documentation
Adafruit s DS3231 RTC Library Documentation Release 1.0 Philip Moyer Aug 25, 2018 Contents 1 Dependencies 3 2 Usage Notes 5 2.1 Basics................................................... 5 2.2 Date and
More informationAdafruit SGP30 TVOC/eCO2 Gas Sensor
Adafruit SGP30 TVOC/eCO2 Gas Sensor Created by lady ada Last updated on 2018-03-06 12:33:17 AM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: Data Pins Wiring Parts Wiring Arduino Code
More informationAdafruit AM2320 Sensor
Adafruit AM2320 Sensor Created by lady ada Last updated on 2018-03-07 09:49:28 PM UTC Guide Contents Guide Contents Overview Pinouts Arduino Usage Install Adafruit Sensor Download Adafruit_AM2320 Load
More informationAdafruit I2C FRAM Breakout
Adafruit I2C FRAM Breakout Created by lady ada Last updated on 2017-07-14 05:38:45 AM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: I2C Logic pins: Assembly Prepare the header strip: Add
More informationAdafruit MPRLS Ported Pressure Sensor Breakout
Adafruit MPRLS Ported Pressure Sensor Breakout Created by lady ada Last updated on 2018-09-26 08:51:24 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: I2C Logic pins: Other pins: Arduino
More informationAdafruit MMA8451 Accelerometer Breakout
Adafruit MMA8451 Accelerometer Breakout Created by lady ada Last updated on 2018-02-06 04:55:03 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins I2C Pins INT and ADDR Pins Assembly Prepare
More informationAdafruit Si5351 Clock Generator Breakout
Adafruit Si5351 Clock Generator Breakout Created by lady ada Last updated on 2017-06-02 07:54:50 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins I2C Pins Assembly Prepare the header strip:
More informationJoy Featherwing. Created by Dean Miller. Last updated on :03:07 PM UTC
Joy Featherwing Created by Dean Miller Last updated on 2018-08-22 04:03:07 PM UTC Guide Contents Guide Contents Overview Pinouts Power and Reset Pins I2C Data Pins I2C Addressing Optional Interrupt Pin
More informationMCP Bit DAC Tutorial
MCP4725 12-Bit DAC Tutorial Created by lady ada Last updated on 2018-03-05 10:51:16 PM UTC Guide Contents Guide Contents Overview Wiring Arduino Code Using the library Increasing the speed CircuitPython
More informationAdafruit MMA8451 Accelerometer Breakout
Adafruit MMA8451 Accelerometer Breakout Created by lady ada Last updated on 2014-07-31 07:00:14 PM EDT Guide Contents Guide Contents Overview Pinouts (http://adafru.it/dln)power Pins I2C Pins INT and ADDR
More informationTSL2561 Luminosity Sensor
TSL2561 Luminosity Sensor Created by lady ada Last updated on 2018-01-27 12:17:52 AM UTC Guide Contents Guide Contents Overview Wiring the TSL2561 Sensor Breakout Board Prep Wiring up the sensor Arduino
More informationAdafruit DRV2605 Haptic Controller Breakout
Adafruit DRV2605 Haptic Controller Breakout Created by lady ada Last updated on 2016-10-03 09:48:16 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins I2C Pins Other! Assembly Prepare the
More informationAdafruit AS channel Visible Light Sensor
Adafruit AS7262 6-channel Visible Light Sensor Created by Dean Miller Last updated on 2018-03-28 08:29:27 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: Logic pins: UART Logic pins:
More informationAdafruit CCS811 Air Quality Sensor
Adafruit CCS811 Air Quality Sensor Created by Dean Miller Last updated on 2018-01-15 11:03:58 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: Logic pins: Arduino Wiring & Test I2C Wiring
More informationAdafruit Color Sensors
Adafruit Color Sensors Created by Bill Earl Last updated on 2018-11-05 03:48:12 PM UTC Guide Contents Guide Contents Overview Assembly and Wiring Assembly (breakout version only) Position the header Position
More informationAdafruit AMG8833 8x8 Thermal Camera Sensor
Adafruit AMG8833 8x8 Thermal Camera Sensor Created by Justin Cooper Last updated on 2017-11-27 10:00:27 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: Logic pins: Assembly Prepare the
More informationAdafruit MMA8451 Accelerometer Breakout
Adafruit MMA8451 Accelerometer Breakout Created by lady ada Last updated on 2018-08-22 03:42:52 PM UTC Guide Contents Guide Contents Overview Pinouts (https://adafru.it/dln)power Pins I2C Pins INT and
More informationAdafruit 8x16 LED Matrix FeatherWing
Adafruit 8x16 LED Matrix FeatherWing Created by lady ada Last updated on 2016-05-20 01:58:38 PM EDT Guide Contents Guide Contents Overview Pinouts Power Pins I2C pins Address Jumpers Changing Addresses
More informationMonochrome OLED Breakouts
Monochrome OLED Breakouts Created by lady ada Last updated on 2018-01-02 08:35:47 PM UTC Guide Contents Guide Contents Overview Power Requirements OLED Power Requirements 5V- ready 128x64 and 128x32 OLEDs
More informationAdafruit TPL5110 Power Timer Breakout
Adafruit TPL5110 Power Timer Breakout Created by lady ada Last updated on 2017-12-11 06:28:19 AM UTC Guide Contents Guide Contents Overview Pinouts Power Pins Control Pins Assembly Prepare the header strip:
More informationIS31FL x9 Charlieplexed PWM LED Driver
IS31FL3731 16x9 Charlieplexed PWM LED Driver Created by lady ada Last updated on 2018-01-10 06:31:05 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins I2C Data Pins Other Control Pins LED
More informationAdafruit Mini TFT " 160x80
Adafruit Mini TFT - 0.96" 160x80 Created by lady ada Last updated on 2017-11-17 05:56:10 PM UTC Guide Contents Guide Contents Overview Pinouts Assembly Prepare the header strip: Add the breakout board:
More informationMLX90393 Wide-Range 3-Axis Magnetometer
MLX90393 Wide-Range 3-Axis Magnetometer Created by Kevin Townsend Last updated on 2019-02-15 01:48:36 AM UTC Guide Contents Guide Contents Overview Specifications Pinout Power Pins Digital Pins Arduino
More informationAdafruit 1.27" and 1.5" Color OLED Breakout Board
Adafruit 1.27" and 1.5" Color OLED Breakout Board Created by Bill Earl Last updated on 2017-11-17 05:54:22 PM UTC Guide Contents Guide Contents Overview Board Technical Details Assembly Prepare the header
More informationi2c/spi LCD Backpack Created by lady ada Last updated on :11:04 PM UTC
i2c/spi LCD Backpack Created by lady ada Last updated on 2017-08-16 05:11:04 PM UTC Guide Contents Guide Contents Overview Which LCD to Use? Wait - the backpack has 16 holes, but my LCD only has 14 pins!
More informationMCP Bit DAC Tutorial
MCP4725 12-Bit DAC Tutorial Created by lady ada Last updated on 2016-10-07 04:47:03 PM UTC Guide Contents Guide Contents Overview Wiring Using with Arduino Using the library Increasing the speed Download
More informationAdafruit 8x16 LED Matrix FeatherWing
Adafruit 8x16 LED Matrix FeatherWing Created by lady ada Last updated on 2019-01-28 05:47:44 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins I2C pins Address Jumpers Changing Addresses
More informationNeoMatrix 8x8 Word Clock
NeoMatrix 8x8 Word Clock Created by Andy Doro Last updated on 2017-10-10 04:10:51 AM UTC Guide Contents Guide Contents Overview Parts List Parts Tools Circuit Assembly Overview Uploading Code Understanding
More informationAdafruit TPL5111 Reset Enable Timer Breakout
Adafruit TPL5111 Reset Enable Timer Breakout Created by lady ada Last updated on 2017-11-02 07:32:27 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins Control Pins Assembly Prepare the header
More informationAdafruit 7-Segment LED FeatherWings
Adafruit 7-Segment LED FeatherWings Created by lady ada Last updated on 2017-11-26 08:48:20 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins I2C pins Address Jumpers Changing Addresses
More informationAdafruit GPIO Expander Bonnet for Raspberry Pi Created by Kattni Rembor. Last updated on :12:47 PM UTC
Adafruit GPIO Expander Bonnet for Raspberry Pi Created by Kattni Rembor Last updated on 2019-03-09 11:12:47 PM UTC Overview The Raspberry Pi is an amazing single board computer - and one of the best parts
More informationAdafruit ATWINC1500 WiFi Breakout
Adafruit ATWINC1500 WiFi Breakout Created by lady ada Last updated on 2018-01-29 08:25:04 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins SPI Pins Other SPI Interface Pins Assembly Prepare
More informationFlora Wearable GPS. Created by Becky Stern. Last updated on :32:36 PM UTC
Flora Wearable GPS Created by Becky Stern Last updated on 2018-08-22 03:32:36 PM UTC Guide Contents Guide Contents Overview Hook up GPS Program FLORA Basic Echo Test Install Adafruit GPS Library Load Echo
More informationIntroducing Adafruit Trellis
Introducing Adafruit Trellis Created by lady ada Last updated on 2016-09-16 09:12:22 PM UTC Guide Contents Guide Contents Overview Adding LEDs Connecting Library reference Creating the objects Controlling
More information1.8" TFT Display Breakout and Shield
1.8" TFT Display Breakout and Shield Created by lady ada Last updated on 2017-11-17 05:51:22 PM UTC Guide Contents Guide Contents Overview Breakout Pinouts Breakout Assembly Prepare the header strip: Add
More informationAdafruit Capacitive Touch Sensor Breakouts
Adafruit Capacitive Touch Sensor Breakouts Created by Bill Earl Last updated on 2018-08-22 03:36:13 PM UTC Guide Contents Guide Contents Overview Momentary Toggle 5-Pad Momentary Assembly and Wiring Installing
More informationAdafruit HUZZAH32 - ESP32 Feather
Adafruit HUZZAH32 - ESP32 Feather Created by lady ada Last updated on 2017-07-14 02:14:00 AM UTC Guide Contents Guide Contents Overview Pinouts Power Pins Logic pins Serial pins I2C & SPI pins GPIO & Analog
More informationAdafruit PowerBoost 500 Shield
Adafruit PowerBoost 500 Shield Created by lady ada Last updated on 2018-08-22 03:43:27 PM UTC Guide Contents Guide Contents Overview Pinouts DC/DC Boost section Indicator LEDs Charging section Power Switch
More informationAdafruit TSL2591 High Dynamic Range Digital Light Sensor
Adafruit TSL2591 High Dynamic Range Digital Light Sensor Created by lady ada Last updated on 2018-01-27 05:10:53 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: I2C Logic pins: Other
More information14-Segment Alpha-numeric LED FeatherWing
14-Segment Alpha-numeric LED FeatherWing Created by lady ada Last updated on 2017-11-26 08:54:28 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins I2C pins Address Jumpers Changing Addresses
More informationAdafruit MAX31865 RTD PT100 or PT1000 Amplifier
Adafruit MAX31865 RTD PT100 or PT1000 Amplifier Created by lady ada Last updated on 2018-01-09 06:12:19 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins: SPI Logic pins: Sensor Terminal
More informationAdafruit LIS3DH Triple-Axis Accelerometer Breakout
Adafruit LIS3DH Triple-Axis Accelerometer Breakout Created by lady ada Last updated on 2017-11-14 02:21:20 AM UTC Guide Contents Guide Contents Overview Pinouts Power Pins I2C Pins SPI pins: Other Pins
More informationAdafruit eink Display Breakouts
Adafruit eink Display Breakouts Created by lady ada Last updated on 2018-07-18 07:24:25 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins Data Control Pins Usage & Expectations Arduino Code
More information0.96" mini Color OLED
0.96" mini Color OLED Created by lady ada Last updated on 2016-09-08 03:41:52 PM UTC Guide Contents Guide Contents Overview Power Wiring New Model Older Model Wiring the OLDER design (two rows of pins
More informationAdafruit Mini TFT with Joystick Featherwing
Adafruit Mini TFT with Joystick Featherwing Created by lady ada Last updated on 2018-08-24 04:45:05 AM UTC Guide Contents Guide Contents Overview Pinouts Color TFT Display Buttons and Joystick seesaw Chip
More informationFeatherWing Proto, Doubler and Tripler
FeatherWing Proto, Doubler and Tripler Created by lady ada Last updated on 2018-11-15 10:39:12 PM UTC Guide Contents Guide Contents Overview FeatherWing Proto FeatherWing Doubler FeatherWing Tripler Proto
More informationAdafruit WINC1500 WiFi Shield for Arduino
Adafruit WINC1500 WiFi Shield for Arduino Created by lady ada Last updated on 2017-11-27 07:04:37 PM UTC Guide Contents Guide Contents Overview Pinouts SPI Interface Pins WiFi Control Pins SD Card Interface
More informationAdafruit Feather 32u4 Basic Proto
Adafruit Feather 32u4 Basic Proto Created by lady ada Last updated on 2016-09-21 01:21:46 AM UTC Guide Contents Guide Contents Overview Pinouts Power Pins Logic pins Other Pins! Assembly Header Options!
More informationData Logging with Feather and CircuitPython
Data Logging with Feather and CircuitPython Created by Kattni Rembor Last updated on 2018-04-30 09:58:20 PM UTC Guide Contents Guide Contents Overview Things You'll Need Adafruit Feather M0 Express - Designed
More informationFeatherWing Proto and Doubler
FeatherWing Proto and Doubler Created by lady ada Last updated on 2016-09-19 05:11:36 PM UTC Guide Contents Guide Contents Overview FeatherWing Proto FeatherWing Doubler Proto Pinout Proto Pinout Duplicated
More informationAdafruit LED Sequins. Created by Becky Stern. Last updated on :02:00 AM UTC
Adafruit LED Sequins Created by Becky Stern Last updated on 2018-03-02 04:02:00 AM UTC Guide Contents Guide Contents Overview Sewing with conductive thread Circuit Diagram GEMMA sequin hat Arduino Code
More informationAdafruit IO Basics: Servo
Adafruit IO Basics: Servo Created by Todd Treece Last updated on 2018-08-22 03:59:11 PM UTC Guide Contents Guide Contents Overview Adafruit IO Setup Creating the Servo Feed Adding the Slider Block Wiring
More informationAdafruit ATWINC1500 WiFi Breakout
Adafruit ATWINC1500 WiFi Breakout Created by lady ada Last updated on 2016-09-22 07:01:05 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins SPI Pins Other SPI Interface Pins Assembly Prepare
More informationSino:bit with Arduino
Sino:bit with Arduino Created by Dave Astels Last updated on 2017-12-04 02:22:05 PM UTC Guide Contents Guide Contents Accelerometer and Magnetometer Magnetometer Accelerometer Adafruit Libraries Download
More informationRGB LCD Shield. Created by lady ada. Last updated on :48:40 PM UTC
RGB LCD Shield Created by lady ada Last updated on 2017-12-04 11:48:40 PM UTC Guide Contents Guide Contents Overview Parts List 1) Resistors 2) Potentiometer 3) Pushbuttons 4) i2c Port Expander Chip 5)
More informationAdafruit Pi Cobbler Kit
Adafruit Pi Cobbler Kit Created by lady ada Last updated on 2018-08-22 03:30:27 PM UTC Guide Contents Guide Contents Overview Solder it! Buy a Pi Cobbler Kit! Downloads 2 3 5 15 16 Adafruit Industries
More informationAdafruit 2.4" TFT FeatherWing
Adafruit 2.4" TFT FeatherWing Created by lady ada Last updated on 2018-01-12 04:29:29 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins SPI Pins TFT Control Pins Touch Screen control pins
More informationAdafruit LED Backpacks
Adafruit LED Backpacks Created by lady ada Last updated on 2018-08-22 03:30:15 PM UTC Guide Contents Guide Contents Overview 1.2" 8x8 Matrix (https://adafru.it/apt)mini 8x8 Matrix Software 0.8" 8x8 Matrix
More informationGetting Started with FLORA
Getting Started with FLORA Created by Becky Stern Last updated on 2018-01-03 04:31:24 AM UTC Guide Contents Guide Contents Overview Windows Driver Installation Manual Driver Installation Download software
More informationNeon LED Signs. Created by John Park. Last updated on :11:09 PM UTC
Neon LED Signs Created by John Park Last updated on 2018-08-22 04:11:09 PM UTC Guide Contents Guide Contents Overview Parts Materials Tools Build the Sign Driver Preparation Solder the Circuit Solder the
More informationNaughty or Nice Machine
Naughty or Nice Machine Created by Brian Corteil Last updated on 2018-08-22 03:45:31 PM UTC Guide Contents Guide Contents Overview It knows if you have been Naughty or Nice! Make It! Parts The Case The
More informationAdafruit ATWINC1500 WiFi Breakout
Adafruit ATWINC1500 WiFi Breakout Created by lady ada Last updated on 2016-03-09 12:29:56 PM EST Guide Contents Guide Contents Overview Pinouts Power Pins SPI Pins Other SPI Interface Pins Assembly Prepare
More informationAdafruit 3.5" 480x320 TFT FeatherWing
Adafruit 3.5" 480x320 TFT FeatherWing Created by lady ada Last updated on 2018-06-17 10:09:34 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins SPI Pins Touch Screen control pins SD Card
More informationToy Car Speed Timer. Created by Kirby Griese. Last updated on :13:49 PM UTC
Toy Car Speed Timer Created by Kirby Griese Last updated on 2017-03-20 09:13:49 PM UTC Guide Contents Guide Contents Overview Parts needed Prerequisites 3D Printing Assembly Wiring Software Use It 2 3
More informationAdafruit Prototyping Pi Plate. Created by Ladyada
Adafruit Prototyping Pi Plate Created by Ladyada Guide Contents Guide Contents Overview Solder it! User Manual Buy Adafruit Prototyping Pi Plate 2 3 4 14 17 Adafruit Industries http://learn.adafruit.com/adafruit-prototyping-pi-plate
More informationIntroducing Circuit Playground
Introducing Circuit Playground Created by lady ada Last updated on 2016-11-03 08:53:06 AM UTC Guide Contents Guide Contents Overview Pinouts GPIO + Capacitive Touch Pads NeoPixels Pushbuttons Slide Switch
More informationAdafruit IO Basics: ESP Arduino
Adafruit IO Basics: ESP8266 + Arduino Created by Todd Treece Last updated on 2017-03-27 10:31:41 PM UTC Guide Contents Guide Contents Overview Adafruit Feather HUZZAH with ESP8266 WiFi Pros/Cons of the
More informationAdafruit 3.5" 480x320 TFT FeatherWing
Adafruit 3.5" 480x320 TFT FeatherWing Created by lady ada Last updated on 2017-10-29 06:25:16 PM UTC Guide Contents Guide Contents Overview Pinouts Power Pins SPI Pins Touch Screen control pins SD Card
More informationAdafruit LED Backpacks
Adafruit LED Backpacks Created by lady ada Last updated on 2017-09-08 07:40:11 PM UTC Guide Contents Guide Contents Overview 1.2" 8x8 Matrix (http://adafru.it/apt)mini 8x8 Matrix Software 0.8" 8x8 Matrix
More informationPyPortal NeoPixel Color Picker Created by Kattni Rembor. Last updated on :42:41 PM UTC
PyPortal NeoPixel Color Picker Created by Kattni Rembor Last updated on 2019-03-27 10:42:41 PM UTC Overview This simple project adds a little color to your life with CircuitPython, PyPortal and NeoPixels.
More informationBLE Light Switch with Feather nrf52840 and Crickit
BLE Light Switch with Feather nrf52840 and Crickit Created by John Park Last updated on 2019-02-15 07:06:19 PM UTC Guide Contents Guide Contents Overview Parts Adafruit Feather nrf52840 Express Adafruit
More informationIntroducing Circuit Playground
Introducing Circuit Playground Created by lady ada Last updated on 2016-08-27 02:46:58 AM UTC Guide Contents Guide Contents Overview Pinouts GPIO + Capacitive Touch Pads NeoPixels Pushbuttons Slide Switch
More informationGPS Logging Dog Harness
GPS Logging Dog Harness Created by Becky Stern Last updated on 2015-01-15 10:15:19 PM EST Guide Contents Guide Contents Overview Circuit Diagram Sew Circuit Use It! 2 3 5 6 15 Adafruit Industries https://learn.adafruit.com/gps-logging-dog-harness
More informationAdafruit GPS Hat in Windows IoT Core
Adafruit GPS Hat in Windows IoT Core Created by Rick Lesniak Last updated on 2017-01-01 08:17:19 PM UTC Guide Contents Guide Contents Overview Assembly GPSDemoApp Adafruit Class Library 2 3 4 6 13 Adafruit
More informationArduino Lesson 6. Digital Inputs
Arduino Lesson 6. Digital Inputs Created by Simon Monk Last updated on 2018-02-27 10:20:04 PM UTC Guide Contents Guide Contents Overview Parts Part Qty Breadboard Layout Arduino Code Push Switches Other
More informationUsing IFTTT with Adafruit IO to Make an IoT Door Detector
Using IFTTT with Adafruit IO to Make an IoT Door Detector Created by Todd Treece Last updated on 2017-09-12 03:10:35 PM UTC Guide Contents Guide Contents Overview Adafruit.io + IFTTT Wiring Low Power Usage
More informationAdafruit IO Basics: Analog Input
Adafruit IO Basics: Analog Input Created by Todd Treece Last updated on 2018-08-22 03:47:38 PM UTC Guide Contents Guide Contents Overview Adafruit IO Setup Creating the Analog Feed Adding the Gauge Block
More informationFLORA and GEMMA ICSP. Created by Becky Stern. Last updated on :42:16 PM UTC
FLORA and GEMMA ICSP Created by Becky Stern Last updated on 2018-08-22 03:42:16 PM UTC Guide Contents Guide Contents Overview Reprogram FLORA over ICSP Reprogram GEMMA over ICSP 2 3 4 9 Adafruit Industries
More informationInterior Purse Light. Created by Becky Stern. Last updated on :41:08 PM UTC
Interior Purse Light Created by Becky Stern Last updated on 2018-08-22 03:41:08 PM UTC Guide Contents Guide Contents Overview Circuit Diagram Stitch Sequins Add Tape Arduino Code CircuitPython Code Use
More informationAdafruit IO Basics: Digital Output
Adafruit IO Basics: Digital Output Created by Todd Treece Last updated on 2017-09-12 03:10:33 PM UTC Guide Contents Guide Contents Overview Adafruit IO Setup Creating the Digital Feed Adding the Toggle
More informationFLORA TV-B-Gone. Created by Becky Stern. Last updated on :32:57 PM UTC
FLORA TV-B-Gone Created by Becky Stern Last updated on 2018-08-22 03:32:57 PM UTC Guide Contents Guide Contents Overview Parts Tutorials Transistors Resistors LEDs Pushbutton Program it Power Fabric pinwheel
More informationCircuit Playground Digital Input
Circuit Playground Digital Input Created by Carter Nelson Last updated on 2017-02-27 03:36:50 AM UTC Guide Contents Guide Contents Overview Required Parts Before Starting Digital Signals 3V Logic Pocket
More informationNeoPixel Bike Light. Created by Ruiz Brothers. Last updated on :43:46 PM UTC
NeoPixel Bike Light Created by Ruiz Brothers Last updated on 2018-11-15 07:43:46 PM UTC Guide Contents Guide Contents Overview 3D Printed Headlight Adafruit's Feather Platform Circuit Python Powered Parts
More informationAdafruit IO Basics: Digital Input
Adafruit IO Basics: Digital Input Created by Todd Treece Last updated on 2017-07-14 11:49:29 PM UTC Guide Contents Guide Contents Overview Adafruit IO Setup Creating the Digital Feed Adding the Gauge Block
More informationMiniPOV4 - DIY Full-Color Persistence of Vision & Light-Painting Kit
MiniPOV4 - DIY Full-Color Persistence of Vision & Light-Painting Kit Created by lady ada Last updated on 2018-08-22 03:41:06 PM UTC Guide Contents Guide Contents Overview Make it! Testing Upload Images
More informationCoffee Detonator: The TNT Plunger Grinder
Coffee Detonator: The TNT Plunger Grinder Created by John Park Last updated on 2017-04-12 08:04:36 PM UTC Guide Contents Guide Contents Overview Materials Voltage Conversion AC/DC Voltage Divider Microcontroller
More informationAndroid GBoard Morse Code Control with Circuit Playground Express
Android GBoard Morse Code Control with Circuit Playground Express Created by Dave Astels Last updated on 2018-08-22 04:10:30 PM UTC Guide Contents Guide Contents Overview Parts Materials for the box Installing
More informationTrellis 3D Printed Enclosure
Trellis 3D Printed Enclosure Created by Ruiz Brothers Last updated on 2018-08-22 03:39:07 PM UTC Guide Contents Guide Contents Overview Parts Tools & Supplies Modeling 123D Design Customize Measuring Parts
More informationNeoPixel Ring Bangle Bracelet
NeoPixel Ring Bangle Bracelet Created by Becky Stern Last updated on 2017-09-28 11:14:48 PM UTC Guide Contents Guide Contents Overview Circuit Diagram Build it! Arduino Code CircuitPython Code Planning
More informationAdafruit Stepper + DC Motor FeatherWing
Adafruit Stepper + DC Motor FeatherWing Created by lady ada Last updated on 2018-01-10 11:40:55 PM UTC Guide Contents Guide Contents Overview Pinouts Motor Power Pins Motor Outputs Logic Power Pins I2C
More informationCircuit Playground Express Head-Tilt Ears
Circuit Playground Express Head-Tilt Ears Created by Dave Astels Last updated on 2018-10-09 04:07:03 PM UTC Guide Contents Guide Contents Overview Parts Circuit Playground Express Micro servo Lithium Ion
More informationNeoPixel Basketball Hoop
NeoPixel Basketball Hoop Created by Justin Cooper Last updated on 2018-08-27 12:19:58 AM UTC Guide Contents Guide Contents Overview Parts Needed Power choices! Parts for Option #1 Parts for Option #2 Tools
More informationFeather Weather Lamp. Created by Ruiz Brothers. Last updated on :54:26 PM UTC
Feather Weather Lamp Created by Ruiz Brothers Last updated on 2018-08-22 03:54:26 PM UTC Guide Contents Guide Contents Overview Weather Reactive Pixels Prerequisite Guides Parts Tools & Supplies Circuit
More information